[1]
Iqbal, W. et al. 2021. Parametric and Non-Parametric Spectral Signal Processing Techniques for Estimation of Periodicity in Sunspot Numbers: Spectral signal processing techniques for estimation of preiodcity in sun spot numbers. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences. 56, 1 (Mar. 2021), 9–20.